Is your Issue reproducible Extension-less in Safe-Mode and/or using a new Profile? https://support.mozilla.com/en-US/kb/Safe+Mode https://support.mozilla.com/en-US/kb/Managing+profiles#Creating_a_profile
Reporter -> Are you still experiencing this issue? Have you tried safe mode or a new profile?
Closing bug as Incomplete - if you are still experiencing this issue or have more information to provide feel free to post back here and we can re-open the bug. You can also get assistance by visiting the Firefox help site -> http://support.mozilla.com/en-US/kb/Ask+a+question